强夯的边界接触应力与沉降特性研究

在考虑夯锤自重的基础上，结合夯锤的刚体运动方程和成层弹性地基空间轴对称动力问题的传递矩阵法，导出了强夯的边界接触应力与沉降在变换域中的解析式，通过Ｌａｐｌａｃｅ－Ｈａｎｋｅｌ联合反变换求得了边界接触应力与沉降的时程关系，确定了接触应力时间，并将计算和实测结果作了比较。本文方法能反映强夯的实际性状，有利于成层地基强夯机理的数值分析工作。

Study on surface contact stress and settlement properties during dynamic consolidation

Based on considering the hammer weight itself,the solutions of surface contact stress and settlement in transform domain are presented by combining the hammer rigid kinetic equation and transfer matrix method of 3 D axisymmetric elastodynamic problem for multi-layered foundation during dynamic consolidation. The contact stress-time and settlement-time relations are obtained,in which the Laplace-Hankel mixed inversion transforms are employed, and the contact time is also determined.Moreover,the reliability of the proposed method is proved by comparing calculated value with experimental data.The results show that the presented method in this paper can reflect the practical characteristics of dynamic consolidation and provide an useful numerical analysis method for multi-layercd foundation during dynamic consolidation